Question: Consider the following sample regressions for the linear, the quadratic, and the cubic models along with their respective R2 and adjusted R2. a. Predict y

Consider the following sample regressions for the linear, the quadratic, and the cubic models along with their respective R2 and adjusted R2.

Consider the following sample regressions for the linear, the quadratic,

a. Predict y for x = 2 and 3 with each of the estimated models.
b. Select the most appropriate model. Explain.

Linear Cubic Quadrati 20.08 1.50 -0.31 NA 19.80 20.07 1.58 -0.27 -0.03 Intercept 1.35 NA NA 0.640 Adjusted R2 0.636 0.697 0.691 0.698 0.689

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